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3. Pair of Linear Equations in Two Variables
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Q3 of 186 Page 4

Two numbers are in the ratio of 5 : 6. If 8 is subtracted from each of the numb, they become in the ratio of 4 : 5. Find the numbers.

Let the two numbers be .

According to the question,



…(i)


Also,


⇒ 5(x – 8) = 4(y – 8)


⇒ 5x – 40 = 4y – 32


⇒ 5x – 4y = 8 …(ii)


On putting the value of in Eq. (ii), we get




⇒ x = 40


On putting the value of x = 40 in Eq. (i), we get



Hence, the two numbers are 40 and 48.


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The sum of the two numbers is 18. The sum of their reciprocals is 1/4. Find the numbers.

2

The sum of two numbers is 15 and sum of their reciprocals is . Find the numbers.

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The sum of two numbers is 16 and the sum of their reciprocals is 1/3. Find the numbers.

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Questions · 186
3. Pair of Linear Equations in Two Variables
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